31.91% is the change from 398 to 525
Calculation steps:
[( 525 - 398 ) ÷ 398] x 100 = 31.91%
Formula
Percentage change = [(525 - 398) / 398] x 100
Subtract the new number by the original number
525 - 398 = 127
127 ÷ 398 = 0.31909547738693467
0.31909547738693467 x 100 = 31.91%